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Bulletin PD-2.222 rev. C 12/01
SCHOTTKY RECTIFIER
90SQ... SERIES
9 Amp
Major Ratings and Characteristics
Characteristics
90SQ... Units
IF(AV) Rectangular
waveform
VRRM range
9
35 to 45
A
V
IFSM @ tp = 5 µs sine
VF @9 Apk, TJ = 125°C
2150
0.42
A
V
TJ range
- 55 to 150
°C
Description/Features
The 90SQ axial leaded Schottky rectifier series has been
optimized for very low forward voltage drop, with moderate
leakage. The proprietary barrier technology allows for reliable
operation up to 150°C junction temperature. Typical applica-
tions are in switching power supplies, converters, free-
wheeling diodes, and reverse battery protection.
150° C TJ operation
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
CASE STYLE AND DIMENSIONS
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Conforms to JEDEC Outline DO - 204AR
Dimensions in millimeters and inches
1

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90SQ... Series
Bulletin PD-2.222 rev. C 12/01
Voltage Ratings
Part number
VR Max. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
90SQ035
35
90SQ040
40
90SQ045
45
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward Current
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive
Surge Current * See Fig. 7
EAS Non-RepetitiveAvalancheEnergy
IAR RepetitiveAvalancheCurrent
90SQ
9
2150
340
12
1.8
Units
Conditions
A 50% duty cycle @ TC = 69° C, rectangular wave form
5µs Sine or 3µs Rect. pulse Following any rated
A load condition and
10ms Sine or 6ms Rect. pulse with rated VRRM applied
mJ TJ = 25 °C, IAS= 1.8 Amps, L = 7.4 mH
A Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
VFM Max. Forward Voltage Drop
* See Fig. 1
(1)
IRM Max. Reverse Leakage Current (1)
* See Fig. 2
CT Max. Junction Capacitance
LS Typical Series Inductance
dv/dt Max. Voltage Rate of Change
(Rated VR)
(1) Pulse Width < 300µs, Duty Cycle < 2%
90SQ
0.48
0.57
0.42
0.52
1.75
70
900
10.0
10000
Units
Conditions
V @ 9A
V @ 18A
TJ = 25 °C
V @ 9A
V @ 18A
TJ = 125 °C
mA TJ = 25 °C
mA TJ = 125 °C
VR = rated VR
pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C
nH Measured lead to lead 5mm from body
V/ µs
Thermal-Mechanical Specifications
Parameters
TJ Max. Junction Temperature Range
Tstg Max. Storage Temperature Range
RthJL Max. Thermal Resistance Junction
to Lead
RthJA Typical Thermal Resistance,
Junction to Air
wt Approximate Weight
Case Style
90SQ Units
Conditions
-55 to 150 °C
-55 to 150 °C
8.0 °C/W DCoperation * See Fig. 4
1/8 inch lead leangth
44 °C/W
1.4(0.049) g (oz.)
DO - 204AR JEDEC
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90SQ... Series
Bulletin PD-2.222 rev. C 12/01
100
1000
100
10
1
TJ=150°C
125°C
100°C
75°C
.1 50°C
10
25°C
.01
TJ=150°C
.001
0 5 10 15 20 25 30 35 40 45
ReverseVoltage- VR(V)
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
1000
TJ=125°C
1
TJ= 25°C
TJ=25°C
.1
0 .1 .2 .3 .4 .5 .6 .7 .8 .9 1 1.1 1.2
ForwardVoltageDrop- VFM(V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
10
100
0
10 20 30 40 50
ReverseVoltage- VR(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
D=0.50
D=0.33
D=0.25
1 D=0.17
D=0.08
PDM
=1/8inch
.1
.01
.00001
SinglePulse
(Thermal Resistance)
t1
t2
Notes:
1. DutyfactorD= t1/ t2
2. PeakTJ=PDMxZthJL+TC
.0001
.001
.01
.1
1
t1, RectangularPulseDuration(Seconds)
Fig. 4 - Maximum Thermal Impedance ZthJL Characteristics
10
100
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3